This Wossner piston kit is designed for Harley Davidson 1200–1228cc engines, including the S1 White Lightning, Thunderbolt, and Buell models. Engineered for performance, the forged pistons ensure efficient heat transfer and even thrust load distribution, minimising piston distortion under high stress. Manufactured in Germany, this set includes two pistons and all required installation components.

Features

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  High-performance Wossner forged pistons

  
  


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  Enhanced heat transfer from combustion chamber to cylinder walls

  
  


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  Elliptical design for uniform bearing surface during thermal expansion

  
  


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  Prevents localised pressure points and piston collapse

  
  


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  Complete kit with rings, pins, and circlips

  
  


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  Made in Germany

  
  

Specifications

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  Bore Size: 90.00mm (actual: 89.95mm)

  
  


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  Compression Ratio: 10:1

  
  


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  Compression Height: 30.7mm

  
  


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  Piston Kit: Set of 2

  
  

Cross-Reference OEM Part Numbers

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  56-W9941.100.WO

  
  


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  Wossner K8625D100-2

  
  

Vehicle Fitments

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  Harley Davidson S1 White Lightning 1200–1228cc

  
  


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  Harley Davidson Thunderbolt 1200–1228cc

  
  


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  Harley Davidson Buell 1200–1228cc